Automated cherry pick of #3938: Use uplink interface name for host interface

[gran-vmv]

Cherry pick of #3938 on release-1.7.

#3938: Use uplink interface name for host interface

For details on the cherry pick process, see the cherry pick requests page.

[gran-vmv]

/test-all
/test-flexible-ipam-e2e
/test-multicluster-e2e
/test-windows-all
/test-ipv6-all
/test-ipv6-only-all

[codecov-commenter]

Codecov Report

Merging #3991 (8376537) into release-1.7 (d36afd0) will decrease coverage by 7.15%.
The diff coverage is 6.12%.

@@               Coverage Diff               @@
##           release-1.7    #3991      +/-   ##
===============================================
- Coverage        64.07%   56.91%   -7.16%     
===============================================
  Files              293      429     +136     
  Lines            43307    60708   +17401     
===============================================
+ Hits             27748    34553    +6805     
- Misses           13330    23379   +10049     
- Partials          2229     2776     +547     

Flag	Coverage Δ
e2e-tests	45.88% <6.12%> (?)
integration-tests	35.06% <ø> (?)
kind-e2e-tests	49.33% <6.12%> (-1.10%)	⬇️
unit-tests	44.46% <0.00%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/agent/agent_linux.go	5.36% <0.00%> (+0.22%)	⬆️
pkg/agent/cniserver/pod_configuration.go	55.43% <0.00%> (+0.83%)	⬆️
pkg/agent/util/net.go	51.00% <0.00%> (-0.95%)	⬇️
pkg/agent/util/net_linux.go	29.12% <0.00%> (-5.08%)	⬇️
pkg/ovs/ovsconfig/ovs_client.go	51.45% <25.92%> (+3.52%)	⬆️
pkg/agent/agent.go	58.40% <100.00%> (+5.98%)	⬆️
pkg/agent/controller/trafficcontrol/controller.go	82.64% <100.00%> (ø)
pkg/agent/flowexporter/exporter/certificate.go	0.00% <0.00%> (-50.00%)	⬇️
.../flowexporter/connections/conntrack_connections.go	46.56% <0.00%> (-30.40%)	⬇️
pkg/agent/flowexporter/exporter/exporter.go	49.00% <0.00%> (-28.47%)	⬇️
... and 186 more

[gran-vmv]

/test-all-features-conformance

[gran-vmv]

/test-ipv6-e2e
/test-ipv6-conformance